This is the first forged receiver set from Khaos Kinetics- in fact, it bears serial number 1. It’s also the first gun to be fitted with our universal-fit PRO handguard. This rifle comes furnished with our universal adjustable billet stock, PRO billet grip, Pro buffer system and PRO brake. It’s a true performer. The aged “army green” cerakote is reminiscent of military equipment that pre-dates the M16.